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Engine coolant / inverter coolant

The high-pressure cooling system has a reservoir filled with year round antifreeze coolant. The reservoir is filled at the factory.

Check the antifreeze protection and coolant level at least once a year, at the beginning of the winter season, and before traveling to a colder climate.

Recommended coolant

When adding coolant, use only deionized water, distilled water or soft water for your vehicle and never mix hard water in the coolant filled at the factory.

  • An incorrect coolant mixture can result in severe malfunction or engine/hybrid system damage.

  • The engine in your vehicle has aluminum engine parts and must be protected by an phosphate-based ethylene glycol coolant to prevent corrosion and freezing.

  • Do not use alcohol or methanol coolant or mix them with the specified coolant.

  • Do not use a solution that contains more than 60% antifreeze or less than 35% antifreeze, which would reduce the effectiveness of the solution.

For mixture percentage, refer to the following table.

Ambient Temperature

Mixture Percentage (volume)

Antifreeze

Water

-15 °C

35

65

-25 °C

40

60

-35 °C

50

50

-45 °C

60

40

WARNING

Radiator cap

Never remove the engine coolant cap and/or inverter coolant cap or the drain plug while the engine and radiator are hot. Hot coolant and steam may blow out under pressure, causing serious injury.

Engine coolant cap
Inverter coolant cap

Turn the vehicle off and wait until the engine cools down. Use extreme care when removing the engine coolant cap and/or inverter coolant cap. Wrap a thick towel around it, and turn it counterclockwise slowly to the first stop. Step back while the pressure is released from the cooling system. When you are sure all the pressure has been released, press down on the cap, using a thick towel, and continue turning counterclockwise to remove it.

NOTICE

The engine coolant and/or inverter coolant level is influenced by the hybrid system temperature. Before checking or refilling the engine coolant and/or inverter coolant, turn the hybrid vehicle off.

NOTICE

Make sure the coolant cap is properly closed after refill or coolant.

Otherwise the engine could be overheated while driving.

  1. Check if the radiator cap label is straight In front.

    Engine room front view
  2. Maker sure that the tiny protrusions inside the coolant cap are securely interlocked.

    Engine room rear view